Commit 68f4a852 authored by Dave Jiang's avatar Dave Jiang
Browse files

cxl/test: Add support for acpi extended linear cache 



Add the mock wrappers for hmat_get_extended_linear_cache_size() in order
to emulate the ACPI helper function for the regions that are mock'd by
cxl_test.

Reviewed-by: default avatarJonathan Cameron <jonathan.cameron@huawei.com>
Tested-by: default avatarAlison Schofield <alison.schofield@intel.com>
Reviewed-by: default avatarAlison Schofield <alison.schofield@intel.com>
Reviewed-by: default avatarFabio M. De Francesco <fabio.m.de.francesco@linux.intel.com>
Link: https://patch.msgid.link/20251117144611.903692-4-dave.jiang@intel.com


Signed-off-by: default avatarDave Jiang <dave.jiang@intel.com>
parent 4b1c0466

tools/testing/cxl/Kbuild

+1 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ ldflags-y += --wrap=cxl_rcd_component_reg_phys 
ldflags-y += --wrap=cxl_endpoint_parse_cdat

ldflags-y += --wrap=cxl_dport_init_ras_reporting

ldflags-y += --wrap=devm_cxl_endpoint_decoders_setup

ldflags-y += --wrap=hmat_get_extended_linear_cache_size



DRIVERS := ../../../drivers

CXL_SRC := $(DRIVERS)/cxl

tools/testing/cxl/test/cxl.c

+21 −0
Original line number Diff line number Diff line
@@ -612,6 +612,25 @@ mock_acpi_evaluate_integer(acpi_handle handle, acpi_string pathname, 
	return AE_OK;

}



static int

mock_hmat_get_extended_linear_cache_size(struct resource *backing_res,

					 int nid, resource_size_t *cache_size)

{

	struct acpi_cedt_cfmws *window = mock_cfmws[0];

	struct resource cfmws0_res =

		DEFINE_RES_MEM(window->base_hpa, window->window_size);



	if (!extended_linear_cache ||

	    !resource_contains(&cfmws0_res, backing_res)) {

		return hmat_get_extended_linear_cache_size(backing_res,

							   nid, cache_size);

	}



	*cache_size = mock_auto_region_size;



	return 0;

}



static struct pci_bus mock_pci_bus[NR_BRIDGES];

static struct acpi_pci_root mock_pci_root[ARRAY_SIZE(mock_pci_bus)] = {

	[0] = {
@@ -1140,6 +1159,8 @@ static struct cxl_mock_ops cxl_mock_ops = { 
	.devm_cxl_port_enumerate_dports = mock_cxl_port_enumerate_dports,

	.cxl_endpoint_parse_cdat = mock_cxl_endpoint_parse_cdat,

	.devm_cxl_add_dport_by_dev = mock_cxl_add_dport_by_dev,

	.hmat_get_extended_linear_cache_size =

		mock_hmat_get_extended_linear_cache_size,

	.list = LIST_HEAD_INIT(cxl_mock_ops.list),

};

tools/testing/cxl/test/mock.c

+20 −0
Original line number Diff line number Diff line
@@ -111,6 +111,26 @@ acpi_status __wrap_acpi_evaluate_integer(acpi_handle handle, 
}

EXPORT_SYMBOL(__wrap_acpi_evaluate_integer);



int __wrap_hmat_get_extended_linear_cache_size(struct resource *backing_res,

					       int nid,

					       resource_size_t *cache_size)

{

	int index, rc;

	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);



	if (ops)

		rc = ops->hmat_get_extended_linear_cache_size(backing_res, nid,

							      cache_size);

	else

		rc = hmat_get_extended_linear_cache_size(backing_res, nid,

							 cache_size);



	put_cxl_mock_ops(index);



	return rc;

}

EXPORT_SYMBOL_GPL(__wrap_hmat_get_extended_linear_cache_size);



struct acpi_pci_root *__wrap_acpi_pci_find_root(acpi_handle handle)

{

	int index;

tools/testing/cxl/test/mock.h

+3 −0
Original line number Diff line number Diff line
@@ -25,6 +25,9 @@ struct cxl_mock_ops { 
	void (*cxl_endpoint_parse_cdat)(struct cxl_port *port);

	struct cxl_dport *(*devm_cxl_add_dport_by_dev)(struct cxl_port *port,

						       struct device *dport_dev);

	int (*hmat_get_extended_linear_cache_size)(struct resource *backing_res,

						   int nid,

						   resource_size_t *cache_size);

};



void register_cxl_mock_ops(struct cxl_mock_ops *ops);